Good roll condition, off winder

1. A good parent reel is needed.
2. By a combination of correct tension put in by the drums, effective braking of the parent reel, and correct rider roll pressure (programmed), the tension in the reel should drop steadily in moving from the core to the periphery.
3. If the winder does not have automatic tension control and regenerative braking, it is necessary to speed up gradually and slow down steadily in order to maintain constant tension.
4. Check the tightness of the wound rolls.
5. For any rolls with defects, they should be rewound as soon as possible or the defect may become set and impossible to remove later.
6. Sometimes, defective rolls are rewound and appear to be acceptable and of even hardness;
however, the defect may not really be removed so it shows up at the converter as soon as tension on the roll is released.
Note: Ensure that all rolls sent to the rewinder have full information concerning the location and amount of defective paper. A void detector prior to the machine reel helps provide the information.